190MB/s

Excerpt:

Among the contenders in our "Extreme SDXC Card Showdown," the SanDisk 256GB Extreme microSDXC UHS-I stands out for its balanced performance and reliability. We appreciate the seamless compatibility with the built-in adapter, which simplifies swapping cards between devices. The V30 speed class ensures smooth 4K video recording, while the U3 and A2 ratings cater to our high-resolution photography needs. With write speeds up to 190MB/s, it handles burst-shooting sessions without skipping a beat. We’ve tested it thoroughly, confirming its adherence to V30 standards for video integrity. The card’s robust build fits well in our camera’s slot, though we wish it came in more colors. Overall, it’s an excellent choice for shooters who demand speed and versatility without compromise.